<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script type="text/javascript">

function boom()
{
  var textB = document.createTextNode("b");
  var textC = document.createTextNode("c");
  var textN = document.createTextNode("n");
  var textP = document.createTextNode("p");
  
  var blv = document.createElementNS("http://www.w3.org/1999/xhtml", "div");
  var odj = document.createElementNS("http://www.w3.org/1999/xhtml", "div");
  var tr = document.createElementNS("http://www.w3.org/1999/xhtml", "tr");
  var td = document.createElementNS("http://www.w3.org/1999/xhtml", "td");
  var mathMO = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mo");
  
  td.appendChild(textB);
  document.body.appendChild(blv);
  blv.appendChild(tr);
  blv.appendChild(mathMO);
  mathMO.appendChild(textP);
  odj.appendChild(td);
  odj.appendChild(textN);

  blv.removeChild(tr);
  mathMO.appendChild(odj);
  td.removeChild(textB);
  blv.appendChild(textC);
  document.body.appendChild(odj);
  odj.insertBefore(mathMO, textN);
  document.body.appendChild(mathMO);
  mathMO.appendChild(odj);
}

</script>
</head>

<body onload="boom();"></body>

</html>
